基于DSP的CCD相机消旋控制器及其模拟检测系统

为实现机载相机的图像旋正,设计了隔离机体旋转的消旋平台系统.采用了基于DSP技术(TMS320F28015)高精度MEMS角速率陀螺仪的机械消旋控制方法,组成闭环控制系统,使其能消除机体旋转对相机姿态的耦合影响.由于飞行测试成本高昂,还设计了模拟机体旋转平台以及配套的人机交互软件,可通过软件预设角速度一时间曲线,模拟飞行器在不同飞行阶段的旋转姿态,从而检验消旋控制系统的消旋效果.两者组成了完整的航空图像消旋模拟系统.实践结果表明本设计各项参数及指标均符合实际工作需要,消旋平台的消旋效果十分理想,并且可以适应于温度变化剧烈的工作环境.

Design of despun control system based on DSP and its Simulation Test System

In the field of aero photography,the rotation of aerocraft add additional rotation to the image.In order to compensate the image rotation,a design of despun control system was presented. The system use DSP named TMS320F28015 and MEMS gyroscope with high precision to constitute a closed-loop control system. Owing to the high cost of flight experiments, a device which can simulate the rotation of aerocraft is necessary. By this device , the controlling capability of despun control system can be easily tested.Testing result prove that the despun control system worked perfectly even in a temperature-quickly-changed situation.